Patent US3771332A successfully refreshed from Google Patents.
US3771332A
Expired / Lapsed
US
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Apparatus for separately controlling knitting means
Assignee: VYZK A VYVOJOVG USTAV Z
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Filing: 1971-11-30
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Granted: 1973-11-13
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Expires: 1991-11-30
Abstract
Abstract Knitting means such as needles, sinkers, springs, raising cams, stitch cams and the like or their ferromagnetic portions are separately controlled in a knitting machine by an apparatus comprising a permanent magnet having two pole pieces extending therefrom. An adjustable magnetic shunt in the form of a stepped diameter adjusting screw bridges the pole pieces and is surrounded by an electrical coil. The coil is electrically coupled with the electronic control apparatus of the knitting machine. A spacing shim may be provided on one pole piece to produce and maintain a desired air gap between the pole pieces and the knitting means.
Inventors
- 👤 J Knourek
- 👤 O Kouril
- 👤 V Mureso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:03
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/66; D04B15/68; D04B15/78
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
An apparatus for separately controlling knitting means such as needles, sinkers, springs, raising cams, stitch cams and the like or their ferromagnetic portions in response to electrical current impulses from the electronic control of a knitting machine, comprising, in combination: A. a permanent magnet having at least a pair of pole pieces magnetically coupled therewith, B. an adjustable magnetic shunt bridging said pole pieces to form an adjacent parallel branch of the magnetic field of said permanent magnet, C. an electrical coil surrounding said magnetic shunt and electrically coupled with said electronic control and D. a direct current source connected to the coil so that the magnetomotive force of the coil is in the same direction as the magnetomotive force of the permanent magnet.
Claim 2
Independent Claim
124 words
An apparatus for separately controlling knitting means such as needles, sinkers, springs, raising cams, stitch cams and the like or their ferromagnetic portions in response to electrical current impulses from the electronic control of a knitting machine, comprising, in combination: A. a permanent magnet having at least a pair of pole pieces magnetically coupled therewith, B. an adjustable magnetic shunt bridging said pole pieces to form an adjacent parallel branch of the magnetic field of said permanent magnet, C. an electrical coil surrounding said magnetic shunt and electrically coupled with said electronic control and D. a direct current source connected to the coil so that the magnetomotive force of the coil is in the same direction as the magnetomotive force of the permanent magnet.
Claim 3
Dependent Claim
56 words
An apparatus as defined in claim 1 wherein said adjustable magnetic shunt comprises a stepped diameter adjusting screw, a threaded portion of said screw being secured within a threaded receiving hole in one said pole piece, and the stepped diameter portion thereof forming a pin fitting into a receiving hole within the other said pole piece.
Claim 4
Dependent Claim
70 words
An apparatus as defined in claim 1 including a spacing shim mounted to a side surface of at least one said pole piece, said spacing shim extending beyond the plane of the front head portion of said pole piece by an amount sufficient to produce and maintain an air gap of predetermined width between said front head portions of said pole pieces and the controlled portion of a knitting means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |